<!DOCTYPE HTML>
<title>preserve-3d hit testing</title>
<style>
  #stage {
  }

  #parent {
    -moz-transform-style: preserve-3d;
  }

  #big {
    width: 1000px;
    height: 1000px;
    background-color: #995C7F;
    -moz-transform: translate3d(0px, 0px, 350px) rotatey(45deg);
  }

  #small {
    width: 100px;
    height: 100px;
    background-color: #835A99;
    -moz-transform: translate3d(600px, 200px, 350px);
  }

</style>
<body>
  <div id="stage">
    <div id="parent">
      <div id="small"></div>
      <div id="big"></div>
    </div>
  </div>
